The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1

doi:10.1016/j.jmst.2018.09.067

IMR OpenIR

	The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1
	Zhang, Yaoli 1,2; Li, Jinguo 1,3; Wang, Xinguang 1; Lu, Yiping 4; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Li, Jinguo(jgli@imr.ac.cn) ; Wang, Xinguang(xgwang11b@imr.ac.cn)
	2019-05-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	35 期号:5 页码:902-906
摘要	An eutectic high-entropy alloy consisting Al, Co, Cr, Fe and Ni elements was prepared by vacuum directional solidification technology. The alloy exhibits excellent comprehensive mechanical performance during tension at temperature range of 600-700 degrees C. The microstructure reveals the intersection of twin-twin is the prevailing deformation mechanism and the twins play a dual role in strengthening and toughening the alloy in the thermomechanical process. The deformation twin variants I and Pi were formed by the edge dislocation 11 (2) over bar and the mixed dislocation 21 (1) over bar on the {111} crystal planes, respectively. Besides, the dislocation jogs and kinks caused by twin intersection on the slip planes can strengthen the alloy, which may contribute to the high strength (the tensile strengths at the 600 degrees and 700 degrees tensile tests are respectively780 MPa and 630 MPa.). Moreover, the coherent twin boundary migration has the function of coordinating deformation and contributes to the high ductility of the alloy. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Eutectic high-entropy alloy Tensile properties Deformation twin Dislocation jog Twin migration
资助者	National Natural Science Foundation of China ; High Technology Research and Development Program of China ; National Key R&D Program of China
DOI	10.1016/j.jmst.2018.09.067
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51601192] ; National Natural Science Foundation of China[51671188] ; High Technology Research and Development Program of China[2014AA041701] ; National Key R&D Program of China[2018YFB1106600]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000460640200024
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：74[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132168
专题	中国科学院金属研究所
通讯作者	Li, Jinguo; Wang, Xinguang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Lab Space Mfg Technol, Beijing 100094, Peoples R China 4.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yaoli,Li, Jinguo,Wang, Xinguang,et al. The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(5):902-906.
APA	Zhang, Yaoli,Li, Jinguo,Wang, Xinguang,Lu, Yiping,Zhou, Yizhou,&Sun, Xiaofeng.(2019).The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(5),902-906.
MLA	Zhang, Yaoli,et al."The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.5(2019):902-906.